Twin Zygosity DNA Testing
At-Home | Multiple Location - 1 Order, 2 Kits Shipped
Find Out if Twins Are Identical or Fraternal - Even from Different Locations
My Forever DNA’s Twin Zygosity DNA Test Kit determines whether twins are monozygotic, also known as identical twins, or dizygotic, also known as fraternal twins, using simple cheek swabs.
Our Multiple Location Kit makes it easy to test twins in separate homes, cities, or states. As the original creators of the Multiple Location Home DNA Test, My Forever DNA® provides fast, accurate, confidential results with real human support.
What’s Included in Each Kit Shipped
Each kit is custom-prepared and includes a unique identification number to help ensure samples are matched correctly and securely.
- Easy, step-by-step instructions
- DNA sample envelopes
- FDA-approved cheek swabs
- Result notification form
- Prepaid FedEx return envelope for fast, trackable delivery to our laboratory
Why Choose My Forever DNA® for Twin Testing?
Industry-Leading Accuracy: DNA genetic marker analysis helps determine whether twins are identical or fraternal with reliable, scientifically reviewed results.
AABB & CAP-Accredited U.S. Laboratory: Testing is processed through our trusted U.S.-based laboratory partner. Learn more on our About Our Laboratory page.
100% Confidential & Discreet: Kits arrive in plain FedEx packaging, and your information is handled with care.
Fast Results You Can Trust: Results are typically available within 1-3 business days after samples arrive and are accepted by the laboratory.
Transparent Pricing, No Hidden Fees: Lab fees and shipping are included. No surprise processing fees.
Personalized One-on-One Customer Support: A dedicated DNA Specialist can answer questions, track samples, and guide you from order to results.
Reasons Families Choose Twin Zygosity Testing
- Personal Curiosity and Insight: Learn more about your twins’ shared traits, genetic connection, and biological relationship.
- Medical and Health Planning: Zygosity confirmation may support informed conversations with a medical provider when shared genetic risks are a concern.
- Lost or Unclear Birth Records: DNA testing can help clarify missing, unclear, or conflicting delivery, hospital, or placental records.
- Clinical and Legal Applications: Identical twin confirmation may support donor matching discussions, research, or documentation needs. For court-admissible results, review our Legal DNA Testing options.
Experience the My Forever DNA® Difference
Twin zygosity testing is more than science. We make the process simple, private, and supportive from start to finish.
- Trusted since 2015
- Thousands of verified 5-star reviews
- Ideal for newborns, children, teens, and adults
- No barcode registration or online portal required
- Private, secure results
- Real human support from a DNA Specialist
Need a Different Twin DNA Testing Option?
Testing both twins from the same location?
Our Standard At-Home Twin Zygosity DNA Test Kit may be the better fit.
Need a discreet or alternative DNA sample?
View our Discreet DNA Testing Kit for private sample options beyond cheek swabs.
Clarity, Care & Transparency
For informational use only. This product is not a medical device and is not intended to diagnose, treat, prevent, or assess any medical condition.
Learn more about privacy, product transparency, responsible advertising, and customer trust in our Trust & Transparency Statement.
This at-home DNA test is not for legal or court-admissible purposes unless a legal chain-of-custody test is purchased. Learn more about our Legal DNA Testing options.
Confirm if your twins are identical or fraternal - no matter the distance - with accurate, fast, and private results from My Forever DNA®.
